Rates: live reference API. Amounts stay in this browser.
Calculation details
Planning estimate only, not financial, tax, or legal advice. Verify assumptions and current rules before making decisions.
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Use this result
Share the current inputs or ask ChatGPT to explain the calculation in context.
What does this calculator estimate?
$100 USD at a 0.92 USD/EUR exchange rate converts to 92.00 euros: converted = amount x (rate from to). Rates are reference quotes that move constantly, so check the live rate before a real transfer.
- Converted amount = amount x (rate from currency to target currency) (Wikipedia).
- Reference rates are mid-market quotes, not the buy-sell rates banks charge.
- FX fees of 1-3 percent are common on retail transfers.
How currency conversion works
Conversion multiplies the amount by the rate between the two currencies. The tool uses reference rates built into the page for quick estimates. For live, real-time rates, bank and transfer services quote the actual mid-market price plus their margin.
Limitations to watch for
Rates move constantly — the reference rates are snapshots, not live quotes. Banks and exchange services add spreads and fees on top of the mid-market rate. Transfer services advertise the mid-market rate but charge fees.
How to use it in practice
Use the tool for quick estimates when traveling or shopping internationally. For actual transfers, compare the all-in cost (rate + fees) across services. Always check the rate at the moment of the transaction.
['Enter the amount.', 'Pick the source and target currencies.', 'Read the converted value.']
How this calculator works
Formula
Converts an amount between major currencies using reference exchange rates: converted = amount × (rate from → to).
Worked example
$100 USD at 0.92 USD/EUR converts to €92.00.
Assumptions to verify
- Reference rates are close to current mid-market.
- No transaction fees are modeled.
- The currencies are in the supported set.
Frequently asked questions
How do I convert currency?
Multiply the amount by the rate: $100 × 0.92 = €92.
Are these live rates?
No — reference rates. Live rates move constantly; verify before transactions.
Why is my bank's rate different?
Banks add a spread and fees on top of the mid-market rate.
Which currencies are supported?
15+ majors: USD, EUR, GBP, JPY, CAD, AUD, CHF, CNY, INR, MXN, and more.
What is the mid-market rate?
The real exchange rate between currencies, without bank margins — the baseline to compare offers.
How do I get the best rate?
Compare the all-in cost (rate + fees) across transfer services — the cheapest isn't always the lowest-rate one.
Is this good for large transfers?
Use it to estimate, but get live quotes for large amounts.
Cite this tool
BoringToolsKit. “Currency Converter.” boringtoolskit.com/currency-conv/ (reviewed 2026-08-25). Free to reference in articles, syllabi, and answer posts with a link.
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